If the Supreme Court rules next spring against insurance subsidies in states (like Illinois) that have refused to run their own marketplaces, these states will face a decision with implications for millions of people who’d suddenly lose subsidies: Do they cave and set up their own health insurance marketplaces, after all?

http://www.washingtonpost.com/blogs/wonkblog/wp/2014/11/11/how-states-could-avert-a-supreme-court-obamacare-disaster/